The correct choice is that a method with parameter int[] and another with parameter Integer[] are overloaded. This is true because method overloading in Java depends solely on having the same method name but different parameter lists, and int[] (a primitive array) and Integer[] (a wrapper class array) are considered distinct parameter types. The return type plays no role in overloading, so even if both methods returned the same type, they would still be overloaded. On the Oracle Java Foundations 1Z0-811 exam, this concept tests your understanding that arrays of primitives and arrays of their corresponding wrapper classes are not interchangeable for overloading purposes—a common trap is assuming that autoboxing applies to entire arrays, which it does not. Remember the memory tip: "Primitive arrays and wrapper arrays are different signatures; autoboxing works on elements, not on the array container itself."
1Z0-811 Arrays and Methods Practice Question
This 1Z0-811 practice question tests your understanding of arrays and methods. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which statement about method overloading with array parameters is true?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A method with parameter int[] and another with parameter Integer[] are overloaded.
Option B is correct because method overloading requires methods to have the same name but different parameter lists. int[] and Integer[] are different parameter types (primitive array vs. wrapper class array), so they satisfy the overloading requirement. The return type is irrelevant for overloading.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
A method with parameter int[] and another with parameter int... are overloaded.
Why it's wrong here
They are considered the same signature, causing a compilation error.
✓
A method with parameter int[] and another with parameter Integer[] are overloaded.
Why this is correct
int[] and Integer[] are different types, so they can be overloaded.
Related concept
Read the scenario before looking for a memorised answer.
✗
Two methods with the same name and same parameter types but different return types are considered overloaded.
Why it's wrong here
Return type alone does not distinguish overloads.
✗
A method with parameter int[] and another with parameter int[][0] are overloaded.
Why it's wrong here
int[][0] is not a valid type.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the misconception that varargs (int...) and arrays (int[]) are distinct types for overloading, when in fact they are treated identically by the compiler.
Detailed technical explanation
How to think about this question
Under the hood, Java resolves method calls at compile time based on the exact parameter types. For overloading, the compiler distinguishes between int[] and Integer[] because they are different types in the JVM (primitive array vs. reference array). Varargs (int...) are syntactic sugar that the compiler expands to an array, so they cannot overload with an explicit array of the same type.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-811 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Arrays and Methods — This question tests Arrays and Methods — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A method with parameter int[] and another with parameter Integer[] are overloaded. — Option B is correct because method overloading requires methods to have the same name but different parameter lists. int[] and Integer[] are different parameter types (primitive array vs. wrapper class array), so they satisfy the overloading requirement. The return type is irrelevant for overloading.
What should I do if I get this 1Z0-811 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This 1Z0-811 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-811 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.